JPH07208095A - Segment built-up device of multiply-connected tunnel excavator - Google Patents

Abstract

PURPOSE:To assemble segments with a few building-up devices. CONSTITUTION:A building-up device main body 23 is borne along a guide rail 21 in a movable manner, a segment holder 24 is borne on the building-up device main body 23 in a liftable manner, the device main body 23 is moved along the guide rail 21, and segments 7 are positioned in specific positions and are successively built up. It is not necessary to provide a segment-building device every cutter head, and the assembly of the segments 7 to the interior wall of a large-sized section excavated in the shape of an arch can be made with a few building-up device main bodies 23. Working spaces in tunnel and excavator are widened to promote working efficiency and maintenance efficiency, and cost is reduced by curtailing equipment expenses.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment assembling apparatus applied to a multiple tunnel excavator in which cutter heads are arranged in an arc shape or a ring shape.

[0002]

2. Description of the Related Art When excavating a large tunnel, a tunnel excavator (multiple tunnel excavator) having a plurality of cutter heads arranged in an arc shape or a ring shape is used.

A multiple tunnel excavator will be described with reference to FIGS. 5 to 7. FIG. 5 shows an excavation state by the multiple tunnel excavator, FIG. 6 shows a plane of the cutter head, and FIG. 7 shows a view taken along the line VII-VII in FIG.

As shown in the figure, a plurality of rotary shafts 2 are provided on the front surface of the main body 1 in an arc shape (arc shape), and a cutter head 3 is provided on each rotary shaft 2. Adjacent cutter heads 3 are arranged so as to be alternately shifted in the front-rear direction. Leading shafts 4 and 5 are provided at the lower portions of both arch-shaped sides, and a screw conveyor 6 is installed in the leading shafts 4 and 5. In the figure, 7 is a segment assembled after excavation, and 12 is a shield jack for advancing the main body 1 by pressing the segment 7.

In the illustrated multiple tunnel excavator, earth and sand are excavated by the rotation of a plurality of cutter heads 3, and the excavated earth and sand 8 flows down onto a screw conveyor 6 and is carried out. While excavating, the segment 1 is pushed by the shield jack 12 to move the main body 1 forward (excavation), and at the same time as the excavation, the segment 7 is assembled on the arched inner wall after excavation to form an arched tunnel. To be done.
Earth and sand carried out by the screw conveyor 6 (remaining earth and sand on the inner surface)
The excavator 9 is excavated and carried out by the power shovel 10, and a horseshoe-shaped tunnel is constructed.

In constructing the tunnel, segment 7
Are assembled on the inner wall of the arch by the segment assembling device. That is, as shown in FIG. 8, an assembling device 11 for assembling the segment 7 and a segment carry-in device (not shown) for carrying in the segment 7 are installed behind the respective cutter heads 3, and each of the cutter heads 3 is provided. The segment 7 is carried in from the rear, and the assembly device 11 assembles the segment 7 on the arch-shaped inner wall to construct a tunnel.

[0007]

In the conventional segment assembling apparatus used in the above-described multiple tunnel excavating machine, an assembling apparatus 11 and a segment carrying-in apparatus are installed for each cutter head 3, and the segments 7 are respectively installed from the rear. It is structured such that it is carried in and assembled by the assembling device 11. For this reason, the space inside the excavator is narrowed, there is a limit to the installation of subsequent equipment, earth removal equipment, and the like, and it is difficult for people to enter and exit, and the maintainability of each device is poor. Also,
An assembling device 11 and a segment carrying-in device are required for each segment 7, which requires a large equipment cost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a segment assembling apparatus capable of assembling segments with a small number of assembling apparatuses.

[0009]

The structure of the present invention for attaining the above object is to provide a cutter head in a multiple tunnel excavator in which a plurality of cutter heads are arranged in an arc shape or a ring shape. A guide rail is provided along the rear of the cutter head, the assembly apparatus main body is movably supported on the guide rail, and the segment pedestal for holding the segment is supported by the assembly apparatus main body so as to be vertically movable.

[0010]

Operation: Hold the segment on the segment cradle, move the assembly device main body along the guide rail, move the segment to a desired position on the inner wall of the excavated section, and move the segment cradle up and down to position the segment at a predetermined position. , Assemble the segment.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall view of a segment assembling apparatus for a multiple tunnel excavator according to an embodiment of the present invention, FIG. 2 is a view taken along the line II--II in FIG. 1, and FIG. 3 is a guide rail. The lower support situation is shown. Since the structure of the multiple tunnel excavator is shown in FIGS. 5 to 7, duplicated description will be omitted.

As shown in FIGS. 1 and 2, the cutter head 3
A guide rail 21 is provided on the rear side of the cutter head 3 in accordance with the above arrangement state, and the guide rail 21 is attached to the main body 1 by a plurality of connecting beams 22. An assembly device main body (device main body) 23 is movably supported on the guide rail 21, and a segment pedestal (reception base) 2 is attached to the device main body 23.
4 is movably supported. The pedestal 24 holds the segment 7.

As shown in FIG. 2, a wheel 25 that is in rolling contact with the guide rail 21 is provided in the main body 23 of the apparatus.
Is driven and rotated by driving a hydraulic motor (motor) 26 with a brake. On the other hand, the guide rail 21 is provided with a rack 27, and the wheels 25 of the apparatus main body 23 are provided with pinions 28 that mesh with the rack 27. That is, when the wheels 25 are driven and rotated by the drive of the motor 26, the pinion 28 meshes with the rack 27 and rotates,
The device body 23 moves along the guide rail 21.

As shown in FIG. 3, a rail 30 is laid in the lower part of the ring 29 excavated by the cutter head 3 along the excavation direction, and a wheel 31 rolling on the rail 30 is provided at the lower end of the guide rail 21. Has been. That is, the guide rail 21 moves along the rail 30 as the main body 1 advances. A fall prevention plate 32 is provided below the guide rail 21, and the fall prevention plate 32 prevents the device body 23 from falling off the guide rail 21.
The segment 7 is a guide rail 2 by a carrier not shown.
1 is carried in, is hoisted by the hoist 33, and is loaded in the apparatus main body 23.

The apparatus main body 23 will be described in detail with reference to FIG. FIG. 4 shows the detailed situation of the apparatus main body.

As shown in the drawing, an elevating plate 34 is provided in the apparatus main body 23 so as to be able to move up and down, and the elevating plate 34 is driven up and down by a drive of an elevating jack 35 via a wire 36 and a pulley 37. The pedestal 24 is provided on the elevating plate 34, the segment 7 is held and fixed to the pedestal 24 via the pins 38, and the pedestal 24 is moved up and down by the jack 38. In other words, the segment 7 held on the pedestal 24 is lifted together with the lifting plate 34 by the driving of the lifting jack 35, and is further lifted and lowered together with the cradle 24 by the driving of the jack 38 to be positioned at a predetermined position (two points in the figure). The state shown by the chain line).

The segment 7 is carried under the guide rail 21 by a carrier (not shown), hoisted by the hoist 33, and loaded on the apparatus main body 23. By driving the motor 26, the main body 23 of the apparatus is moved to a predetermined position of the ring 29 along the guide rail 21, and the lifting jack 35 is driven at the predetermined position of the ring 29 to drive the pedestal 2 together with the lifting plate 34.
Raise 4 By driving the jack 38, the lifted position of the segment 7 is finely adjusted to position the segment 7 at a predetermined position. After positioning the segment 7 at a predetermined position, the segment 7 is attached to the existing segment 7 by pushing the segment 7 backward with the shield jack 12. The segment 7 is sequentially loaded, and the device main body 2
The segment 7 is assembled in an arched shape by sequentially moving 3, moving the segment 7 up and down, and pressing the segment 7 backward by the shield jack 12.

The segment 7 is assembled on the inner wall surface of the excavation by using an appropriate number of apparatus main bodies 23 depending on the size of the tunnel, the construction condition, and the like.

Therefore, by using the segment assembling apparatus described above, it is not necessary to provide an assembling apparatus for each cutter head, and it is possible to assemble the segment 7 on the inner wall of a large arch-shaped excavation cross section with a small number of apparatus main bodies 23. Becomes For this reason, the space inside the excavator becomes large, the restrictions on the subsequent equipment and the soil discharging equipment are reduced, and people can easily enter and leave, and the maintainability of each device is improved.
Further, the assembly device and the segment loading device for each segment 7 are not required, and the facility cost is reduced.

[0020]

According to the segment assembling apparatus for a multiple tunnel excavator of the present invention, the assembly apparatus main body is movably supported along the guide rail, and the segment pedestal is movably supported by the assembly apparatus main body. It is not necessary to provide a segment assembling device for each head, and it becomes possible to assemble a segment on the inner wall of a large arch-shaped excavation cross section with a small number of assembling device main bodies. As a result, the work space in the mine and the excavator is widened, workability and maintainability can be improved, and the cost can be reduced by reducing the facility cost.

[Brief description of drawings]

FIG. 1 is an overall explanatory view of a segment assembly device for a multiple tunnel excavator according to an embodiment of the present invention.

FIG. 2 is a view taken along the line II-II in FIG.

FIG. 3 is an explanatory view of a supporting state of a lower portion of the guide rail.

FIG. 4 is a detailed situation explanatory view of the assembly device main body.

FIG. 5 is an explanatory view of an excavation situation by a multiple tunnel excavator.

FIG. 6 is a plan view of a cutter head.

7 is a view taken along the line VII-VII in FIG.

FIG. 8 is an overall explanatory view of a conventional segment assembly device.

[Explanation of symbols]

 3 cutter head 7 segment 21 guide rail 22 connecting beam 23 assembly device body (device body) 24 segment pedestal (stand) 25 wheel 26 hydraulic motor (motor) 27 rack 28 pinion 29 ring 30 rail 31 wheel 32 captive plate 33 Hoist 34 Lifting plate 35 Lifting jack 36 Wire 37 Pulley 38 Jack

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jouji Uemura 1-1-1 Wadasaki-cho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Heavy Industries Ltd. Kobe Shipyard

Claims (1)

[Claims] 1. In a multiple tunnel excavator in which a plurality of cutter heads are arranged in an arc shape or a ring shape, a guide rail is provided at the rear of the cutter head according to the arrangement state of the cutter head, and the guide rail is assembled on the guide rail. A segment assembling apparatus for a multiple tunnel excavator, which movably supports the apparatus main body, and a segment pedestal that holds a segment is movably supported by the assembling apparatus main body.